<!--
 * @Author: Bo Cai
 * @Mail: caibo0520@qq.com
 * @Date: 2021-10-05 15:29:20
 * @LastEditors: Bo Cai
 * @LastEditTime: 2021-10-06 01:33:40
-->
<template>
    <div class="app-container">
        <el-form label-width="120px">
            <el-form-item label="讲师名称">
                <el-input v-model="teacherBean.name" />
            </el-form-item>
            <el-form-item label="讲师排序">
                <el-input-number
                    v-model="teacherBean.sort"
                    controls-position="right"
                    :min="0"
                />
            </el-form-item>
            <el-form-item label="讲师头衔">
                <el-select
                    v-model="teacherBean.level"
                    clearable
                    placeholder="请选择"
                >
                    <!--
            数据类型一定要和取出的json中的一致，否则没法回填
            因此，这里value使用动态绑定的值，保证其数据类型是number
          -->
                    <el-option :value="1" label="高级讲师" />
                    <el-option :value="2" label="首席讲师" />
                </el-select>
            </el-form-item>
            <el-form-item label="讲师资历">
                <el-input v-model="teacherBean.career" />
            </el-form-item>
            <el-form-item label="讲师简介">
                <el-input
                    v-model="teacherBean.intro"
                    :rows="10"
                    type="textarea"
                />
                <!-- 讲师头像 -->
                <el-form-item label="讲师头像">
                    <!-- 头衔缩略图 -->
                    <pan-thumb :image="teacherBean.avatar" />
                    <!-- 文件上传按钮 -->
                    <el-button
                        type="primary"
                        icon="el-icon-upload"
                        @click="imagecropperShow = true"
                        >更换头像
                    </el-button>

                    <!--
v-show：是否显示上传组件
:key：类似于id，如果一个页面多个图片上传控件，可以做区分
:url：后台上传的url地址
@close：关闭上传组件
@crop-upload-success：上传成功后的回调 -->
                    <image-cropper
                        v-show="imagecropperShow"
                        :width="300"
                        :height="300"
                        :key="imagecropperKey"
                        :url="BASE_API + '/admin/oss/file/upload'"
                        field="file"
                        @close="close"
                        @crop-upload-success="cropSuccess"
                    />
                </el-form-item>
                <el-button
                    :disabled="saveBtnDisabled"
                    type="primary"
                    @click="saveOrUpdate"
                    >保存</el-button
                >
            </el-form-item>
        </el-form>
    </div>
</template>
<script>
import teacher from '@/api/edu/teacher'
import ImageCropper from '@/components/ImageCropper'
import PanThumb from '@/components/PanThumb'
const defaultForm = {
    name: '',
    sort: 0,
    level: 1,
    career: '',
    intro: '',
    avatar: process.env.OSS_PATH + '/avatar/default.png',
}
export default {
    components: { ImageCropper, PanThumb },
    data() {
        return {
            BASE_API: process.env.BASE_API, // 接口API地址
            imagecropperShow: false, // 是否显示上传组件
            imagecropperKey: 0, // 上传组件id
            teacherBean: defaultForm,
            saveBtnDisabled: false, // 保存按钮是否禁用,
        }
    },
    watch: {
        $route(to, from) {
            console.log('watch $route')
            this.init()
        },
    },
    created() {
        this.init()
    },

    methods: {
        init() {
            if (this.$route.params && this.$route.params.id) {
                const id = this.$route.params.id
                this.getTeacherById(id)
            } else {
                // 使用对象拓展运算符，拷贝对象，而不是引用，
                // 否则新增一条记录后，defaultForm就变成了之前新增的teacher的值
                this.teacherBean = { ...defaultForm }
            }
        },
        saveOrUpdate() {
            this.saveBtnDisabled = true
            if (!this.teacherBean.id) {
                this.saveTeacherData()
            } else {
                this.updateTeacherData()
            }
        },

        // 保存
        saveTeacherData() {
            teacher
                .save(this.teacherBean)
                .then((response) => {
                    return this.$message({
                        type: 'success',
                        message: '保存成功!',
                    })
                })
                .then((resposne) => {
                    this.$router.push({ path: '/teacher' })
                })
                .catch((response) => {
                    // console.log(response)
                    this.$message({
                        type: 'error',
                        message: '保存失败',
                    })
                })
        },
        // 根据id查询记录
        getTeacherById(id) {
            teacher
                .getById(id)
                .then((response) => {
                    this.teacherBean = response.data.item
                })
                .catch((error) => {
                    this.$message({
                        type: 'error',
                        message: '获取数据失败',
                    })
                })
        },
        updateTeacherData() {
            this.saveBtnDisabled = true
            teacher
                .updateById(this.teacherBean)
                .then((response) => {
                    return this.$message({
                        type: 'success',
                        message: '修改成功!',
                    })
                })
                .then((resposne) => {
                    this.$router.push({ path: '/teacher' })
                })
                .catch((response) => {
                    // console.log(response)
                    this.$message({
                        type: 'error',
                        message: '保存失败',
                    })
                })
        },
        // 上传成功后的回调函数
        cropSuccess(data) {
            console.log(data)
            this.imagecropperShow = false
            this.teacherBean.avatar = data.url
            // 上传成功后，重新打开上传组件时初始化组件，否则显示上一次的上传结果
            this.imagecropperKey = this.imagecropperKey + 1
        },
        // 关闭上传组件
        close() {
            this.imagecropperShow = false
            // 上传失败后，重新打开上传组件时初始化组件，否则显示上一次的上传结果
            this.imagecropperKey = this.imagecropperKey + 1
        },
    },
}
</script>